Multi-blade-face high-strength milling cutter structure

Abstract

The invention discloses a multi-blade-face high-strength milling cutter structure and relates to the technical field of milling cutters, the multi-blade-face high-strength milling cutter structure comprises a cutter bar and a plurality of cutting units arranged at the end of the cutter bar, each cutting unit comprises a first cutter bit and a second cutter bit, the first cutter bit comprises a first long blade face, a second long blade face and a first cutter groove, and the second cutter bit comprises a second long blade face and a second cutter groove. The second tool bit comprises a first short blade face, a second short blade face and a second tool groove, and the first long blade face, the second long blade face, the first short blade face and the second short blade face are distributed in a staggered mode in the circumferential direction of the tool bar. The two first tool bits and the four second tool bits are distributed in a staggered mode, so that cutting force is evenly dispersed on different blade faces, excessive local stress is avoided, the stress mode effectively prevents resonance of the whole milling cutter, tool abrasion is reduced, long and short blade faces are abraded relatively evenly, and therefore the service life of the milling cutter is prolonged, and the service life of the milling cutter is prolonged. And the adaptability of the cutter to different machining materials and working conditions is enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of milling cutters, and more specifically, to a multi-edge-surface high-strength milling cutter structure. Background Art

[0002] A milling cutter is a rotating tool with one or more cutting teeth used for milling operations. During operation, each cutting tooth intermittently cuts off the surplus of the workpiece in sequence. Milling cutters are mainly used for machining planes, steps, grooves, formed surfaces, and cutting workpieces on milling machines, etc.

[0003] Currently, most milling cutters have problems of insufficient strength in structural design. The shank part mostly adopts a conventional solid or simple hollow structure, and when bearing a large cutting force, it is prone to deformation or even fracture. Moreover, existing milling cutters cannot adaptively adjust their own structural strength when facing workpieces with different thicknesses and hardnesses, lacking adjustable reinforcement components, and it is difficult to meet the requirements of complex and changeable machining conditions. This not only shortens the service life of the milling cutter, and the frequent replacement of the tool increases the production cost, but also it is difficult to ensure stable machining accuracy and surface quality, and cannot meet the requirements of modern manufacturing for high-efficiency and high-precision machining. In addition, most existing milling cutters are prone to vibration during operation, especially resonance phenomena, which seriously affect the machining accuracy and greatly shorten the service life of the tool. Therefore, there is an urgent need for a multi-edge-surface high-strength milling cutter structure to solve the above problems. Summary of the Invention

[0004] In view of the problems in the related art, the present invention provides a multi-edge-surface high-strength milling cutter structure to overcome the above technical problems existing in the related art.

[0005] The technical solution of the present invention is realized as follows:

[0006] A multi-edge-surface high-strength milling cutter structure includes a shank and a plurality of cutting units arranged at the end of the shank. The cutting unit includes a first cutter head and a second cutter head. The first cutter head includes a first long cutting edge surface, a second long cutting edge surface, and a first cutter groove. The second cutter head includes a first short cutting edge surface, a second short cutting edge surface, and a second cutter groove. The first long cutting edge surface, the second long cutting edge surface, the first short cutting edge surface, and the second short cutting edge surface are distributed alternately along the circumferential direction of the shank, and the cutting force distribution of the first cutter head and the second cutter head constitutes a cooperative cutting mode to reduce the cutting force fluctuation and disperse the local load.

[0007] A cooling component for cooling the first cutter head and the second cutter head is arranged inside the shank.

[0008] A strengthening component and a displacement component for adjusting the position of the strengthening component are arranged on the outer wall of the shank.

[0009] Further, the strengthening component includes a strengthening tube sleeved on the circumferential outer wall of the tool shank. The strengthening tube has a honeycomb structure. The inner circumferential wall of the strengthening tube is fixedly connected with strengthening rods. The cross-section of the strengthening rods is arc-shaped, and one side of the strengthening rods is closely attached to the circumferential outer wall of the tool shank.

[0010] Further, the displacement component includes a fixed disk fixedly connected to the circumferential outer wall of the tool shank. A first spring is fixedly connected to the bottom outer wall of the fixed disk. The bottom end of the first spring is fixedly connected with a movable disk. The movable disk is fixedly connected with the strengthening tube. The inner circumferential wall of the movable disk is in contact with the circumferential outer wall of the tool shank.

[0011] Further, a chute is formed in the circumferential outer wall of the tool shank. A sliding rod is slidably connected inside the chute. One end of the sliding rod is fixedly connected to the inner circumferential wall of the movable disk.

[0012] Further, the cooling component includes a liquid injection hole formed in the top of the tool shank. A liquid distribution groove and a diversion groove are respectively formed inside the tool shank. The cross-section of the diversion groove is spiral. The two ends of the diversion groove are respectively communicated with the liquid injection hole and the liquid distribution groove. Liquid outlet holes are formed in one side of the first tool groove and the second tool groove. The liquid outlet holes are communicated with the liquid distribution groove.

[0013] Further, a chip removal groove for guiding materials to the first tool head and the second tool head is formed in the circumferential outer wall of the tool shank. A corrugated groove is arranged on the outer wall of the chip removal groove located on the second tool head. The corrugated groove is used to change the chip flow path, divide the chips and reduce the friction between the chips and the chip removal groove.

[0014] Further, a connection disk is fixedly connected to the bottom end of the strengthening tube. Rolling grooves are arranged on the bottom outer wall of the connection disk at equal distances in a circular distribution. Ball bearings are arranged inside the rolling grooves.

[0015] Further, a cleaning component driven by centrifugal force is arranged inside the connection disk. The cleaning component includes a movable rod, a brush plate, bristles, a second spring, a movable groove and a slider. The slider slides inside the movable groove. The slider is fixedly connected with the movable rod. The movable rod extends outward along the movable groove under the action of centrifugal force, driving the brush plate to dynamically clean the processing area. And the number of the second springs is two. The elastic coefficients of the two second springs are configured differently to achieve complementary coverage of the cleaning area. A connecting rod is fixedly connected to one side of the other brush plate. The connecting rod is fixedly connected to the circumferential outer wall of the connection disk.

[0016] Furthermore, the outer wall of the bottom of the connecting plate is provided with second through grooves distributed at equal intervals, the top of the connecting plate is provided with first through grooves distributed in a circular shape at equal intervals, the first through grooves are communicated with the second through grooves, and the circumferential inner wall of the second through grooves is provided with arc grooves for expanding the chip removal area.

[0017] Furthermore, a third through groove is opened at one end of the reinforcing rod close to the connecting plate, and the third through groove is located directly above the first through groove.

[0018] The beneficial effects of the present invention:

[0019] A multi-edge high-strength milling cutter structure provided by the present invention, through the first cutting head and the second cutting head arranged, the long cutting edge of the first cutting head undertakes the main cutting task with a larger cutting edge length, and a large amount of materials can be quickly removed. The short cutting edge of the second cutting head performs supplementary cutting and surface finishing during the intermittent period or specific parts of the long cutting edge cutting. The cooperation of the two not only improves the cutting efficiency, but also can reduce the cutting force fluctuation by reasonably distributing the cutting force. At the same time, the two first cutting heads and the four second cutting heads are staggered, so that the cutting force is evenly dispersed on different cutting edges, avoiding excessive local stress. This stress mode effectively prevents the resonance of the entire milling cutter, reduces tool wear, makes the wear of the long and short cutting edges relatively uniform, thereby prolonging the service life of the milling cutter and enhancing the adaptability of the tool to different processing materials and working conditions;

[0020] At the same time, wave grooves are opened on the outer wall of the chip removal groove at the four second cutting heads, which can change the chip flow path. The wave grooves increase the surface area of the chip removal groove, reduce the friction between the chip and the wall of the chip removal groove, and at the same time play a role in dividing and crushing the chip, so that the chip can be discharged more smoothly. A large amount of heat is carried away by the quickly discharged chip, effectively reducing the cutting temperature, ensuring that the milling cutter works at an appropriate temperature, and further improving the performance and life of the milling cutter.

[0021] A multi-edge high-strength milling cutter structure provided by the present invention, when performing machining such as milling holes, the connecting plate abuts against the surface of the workpiece under the action of the first spring and rotates together with the tool shank. At the same time, the ball at the bottom of the connecting plate cooperates with the rolling groove, so that the bottom of the connecting plate does not directly contact the surface of the workpiece, preventing scratching of the workpiece. In this work, the first spring keeps the connecting plate in a pressing force on the surface of the workpiece, ensuring the stability of the milling hole work, thereby improving the machining accuracy. In addition, after the chips generated by the milling cutter work are discharged through the chip removal groove, they pass through the second through groove in turn and are thrown out by the centrifugal force generated by the rotation of the connecting plate. The arc grooves distributed at equal intervals in the second through groove further accelerate the chip discharge efficiency, ensuring the stability of chip removal and providing support for high-precision machining.

[0022] The present invention provides a multi-blade high-strength milling cutter structure. During the processing of the milling cutter structure, the honeycomb-shaped reinforcement tube cooperates with the arc-shaped reinforcement rod to closely adhere to the circumferential outer wall of the cutter bar. The honeycomb structure reduces the weight of the milling cutter and its hollow design is conducive to the discharge of debris. The arc-shaped reinforcement rod makes the reinforcement area of ​​the cutter bar more uniform and avoids reinforcement dead corners. Since the reinforcement tube is fixed at the bottom of the movable plate, when processing workpieces of different thicknesses, the slide rod can slide in the slide groove, thereby adjusting the positions of the reinforcement tube and the reinforcement rod, realizing adaptive adjustment of the milling cutter reinforcement area, always ensuring a good reinforcement effect on the cutter bar, and further improving the strength of the entire milling cutter.

[0023] The present invention provides a multi-blade high-strength milling cutter structure. When the milling cutter structure is processed, the centrifugal force generated by the rotation of the connecting disk drives the slider located inside the movable groove, and then drives the movable rod and the brush plate to diffuse outward. The higher the milling cutter rotation speed, the greater the centrifugal force generated by the connecting disk, the greater the extension of the movable rod from the movable groove, and the cleaning area of ​​the processing table surface by the bristles at the bottom of the brush plate is expanded accordingly. At the same time, the second springs with different elastic coefficients in the two movable grooves make the two movable rods have different extensions under the same centrifugal force. Combined with the connecting rod and the brush plate fixed on the outer wall of the connecting disk, the three groups of brush plates and bristles form complementary cleaning areas, effectively avoiding cleaning dead corners and keeping the processing environment clean and tidy.

[0024] The present invention provides a multi-blade high-strength milling cutter structure. During the milling process, the cutting fluid added to the injection hole flows into the liquid separation groove through the spirally distributed guide groove, and finally discharged through the liquid outlet hole, thereby achieving effective cooling of the first cutter head and the second cutter head, and extending the service life of the cutter head. The spiral guide groove is different from the traditional hollow guide groove. Its unique spiral direction makes the tool bar material more evenly stressed in all directions, avoiding stress concentration, and more evenly dispersing the internal stress of the tool bar while achieving the functions of coolant delivery and heat extraction. In addition, the spiral structure is adapted to the rotational movement direction of the tool bar. During the rotary cutting process of the tool, the centrifugal force can be used to assist the flow of coolant, improve the diversion efficiency, and enhance the torsional strength of the tool bar to a certain extent, ensuring that the tool bar maintains good structural stability and strength when subjected to complex loads such as cutting force, taking into account both functionality and structural strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a schematic diagram of the overall front structure of the present invention.

[0027] Figure 2 It is a schematic diagram of the overall upward view structure of the present invention.

[0028] Figure 3 For the present invention Figure 2 An enlarged schematic diagram of the structure at position A in the present invention.

[0029] Figure 4 For the present invention Figure 2 An enlarged schematic diagram of the structure at position B in the present invention.

[0030] Figure 5 It is a schematic diagram of the bottom downward view structure of the present invention.

[0031] Figure 6 For the present invention Figure 5 An enlarged schematic diagram of the structure at position C in the present invention.

[0032] Figure 7 It is a schematic diagram of the overall half-sectional view structure of the present invention.

[0033] Figure 8 For the present invention Figure 7 An enlarged schematic diagram of the structure at position D in the present invention.

[0034] Figure 9 It is a schematic diagram of the sectional view structure of the connecting plate of the present invention.

[0035] Figure 10 For the present invention Figure 9 An enlarged schematic diagram of the structure at position E in the present invention.

[0036] Figure 11 It is a schematic diagram of the split structure of the reinforcing pipe in the present invention.

[0037] In the figure:

[0038] 1. Tool bar; 2. Fixed disk; 3. First spring; 4. Movable disk; 5. Reinforcing pipe; 6. Connecting plate; 7. Brush plate; 8. Brush bristles; 9. Connecting rod; 10. Chip removal groove; 11. First tool bit; 1101. First long cutting edge surface; 1102. First tool bit groove; 1103. Second long cutting edge surface; 12. Second tool bit; 1201. First short cutting edge surface; 1202. Second tool bit groove; 1203. Second short cutting edge surface; 13. Corrugated groove; 14. First through groove; 15. Slide groove; 16. Reinforcing rod; 17. Ball; 18. Rolling groove; 19. Second through groove; 20. Arc groove; 21. Liquid outlet hole; 22. Flow guiding groove; 24. Slide rod; 25. Liquid injection hole; 26. Liquid distribution groove; 27. Slide block; 28. Movable rod; 29. Movable groove; 30. Second spring; 31. Third through groove. Detailed implementation manners

[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0040] Please refer to Figures 1-11 , a milling cutter structure with multiple cutting edges and high strength, including a tool shank 1 and a plurality of cutting units arranged at the end of the tool shank 1. The cutting unit includes a first cutting head 11 and a second cutting head 12. The first cutting head 11 includes a first long cutting edge surface 1101, a second long cutting edge surface 1103, and a first cutting groove 1102. The second cutting head 12 includes a first short cutting edge surface 1201, a second short cutting edge surface 1203, and a second cutting groove 1202. The first long cutting edge surface 1101, the second long cutting edge surface 1103, the first short cutting edge surface 1201, and the second short cutting edge surface 1203 are distributed alternately along the circumferential direction of the tool shank 1. And the cutting force distribution of the first cutting head 11 and the second cutting head 12 is configured in a cooperative cutting mode to reduce the cutting force fluctuation and disperse the local load;

[0041] A cooling component for cooling the first cutting head 11 and the second cutting head 12 is arranged inside the tool shank 1;

[0042] A strengthening component and a displacement component for adjusting the position of the strengthening component are arranged on the outer wall of the tool shank 1. In this cooperative cutting mode, the long cutting edge surface of the first cutting head 11 undertakes the main cutting task, and the short cutting edge surface of the second cutting head 12 performs supplementary cutting and surface finishing, which not only improves the cutting efficiency, but also reduces the cutting force fluctuation, disperses the local load, prevents the milling cutter from resonating, extends the service life, enhances the adaptability to different machining materials and working conditions. At the same time, the cooling component inside the tool shank 1, the strengthening component on the outer wall, and the displacement component respectively realize the cooling of the cutting head, the strengthening of the strength of the tool shank 1, and the adjustment of the position of the strengthening component, further improving the performance of the milling cutter.

[0043] Preferably, the strengthening component includes a strengthening tube 5 sleeved on the circumferential outer wall of the tool shank 1. The strengthening tube 5 has a honeycomb structure. A strengthening rod 16 is fixedly connected to the circumferential inner wall of the strengthening tube 5. The cross section of the strengthening rod 16 is arc-shaped. One side of the strengthening rod 16 is closely attached to the circumferential outer wall of the tool shank 1. The honeycomb structure reduces the weight of the milling cutter and is beneficial to the discharge of chips. The arc-shaped strengthening rod 16 makes the reinforcement area of the tool shank 1 uniform and avoids reinforcement dead angles. The two work together to effectively enhance the strength of the tool shank 1.

[0044] Preferably, the displacement component includes a fixed disk 2 fixedly connected to the circumferential outer wall of the tool shank 1. A first spring 3 is fixedly connected to the bottom outer wall of the fixed disk 2. The bottom end of the first spring 3 is fixedly connected to a movable disk 4. The movable disk 4 is fixedly connected to the reinforcing tube 5. The inner circumferential wall of the movable disk 4 is in contact with the circumferential outer wall of the tool shank 1. When machining workpieces of different thicknesses, the slide bar 24 slides in the chute 15, driving the movable disk 4 and the reinforcing tube 5 to move, so as to realize the adjustment of the positions of the reinforcing tube 5 and the reinforcing rod 16, enabling the milling cutter to adaptively adjust the reinforcement area according to the workpiece thickness, always maintaining a good reinforcement effect, improving the strength and applicability of the milling cutter. A chute 15 is provided on the circumferential outer wall of the tool shank 1. A slide bar 24 is slidably connected inside the chute 15. One end of the slide bar 24 is fixedly connected to the inner circumferential wall of the movable disk 4.

[0045] Preferably, the cooling component includes a liquid injection hole 25 opened at the top of the tool shank 1. A liquid distribution groove 26 and a diversion groove 22 are respectively opened inside the tool shank 1. The cross-section of the diversion groove 22 is spiral. The two ends of the diversion groove 22 are respectively communicated with the liquid injection hole 25 and the liquid distribution groove 26. Liquid outlet holes 21 are provided on one side of the first tool groove 1102 and the second tool groove 1202. The liquid outlet holes 21 are communicated with the liquid distribution groove 26. When the cutting fluid added by the staff to the liquid injection hole 25 flows into the liquid distribution groove 26 through the spiral diversion groove 22 and then is discharged through the liquid outlet holes 21, the first tool head 11 and the second tool head 12 are cooled. The spiral diversion groove 22 is adapted to the rotation direction of the tool shank 1, assisting the flow of the coolant by means of centrifugal force, improving the diversion efficiency, and at the same time making the force on the material of the tool shank 1 balanced, avoiding stress concentration, enhancing the torsional strength of the tool shank 1, and taking into account both the coolant delivery and the structural strength of the tool shank 1.

[0046] Preferably, a chip removal groove 10 for guiding materials for the first tool head 11 and the second tool head 12 is provided on the circumferential outer wall of the tool shank 1. A corrugated groove 13 is provided on the outer wall of the chip removal groove 10 located on the second tool head 12. The corrugated groove 13 is used to change the chip flow path, divide the chips and reduce the friction between the chips and the chip removal groove 10. The corrugated groove 13 changes the chip flow path, increases the surface area of the chip removal groove 10, reduces the friction between the chips and the wall of the chip removal groove 10, plays a role in dividing and crushing the chips, enables the chips to be discharged more smoothly, takes away a large amount of heat, reduces the cutting temperature, ensures that the milling cutter works at an appropriate temperature, and improves the performance and service life of the milling cutter.

[0047] Preferably, the bottom end of the reinforcing tube 5 is fixedly connected to a connecting plate 6, and the bottom outer wall of the connecting plate 6 is provided with rolling grooves 18 which are equidistantly distributed in a circular shape, and the rolling grooves 18 are provided with balls 17 inside. When milling holes and other processing is performed, the connecting plate 6 is pressed against the surface of the workpiece under the action of the first spring 3, and rotates with the tool rod 1. The balls 17 cooperate with the rolling grooves 18 to avoid direct contact between the bottom of the connecting plate 6 and the surface of the workpiece to prevent scratches on the workpiece. At the same time, the first spring 3 keeps the connecting plate 6 pressed against the surface to ensure the stability of the milling hole and improve the processing accuracy. The chips generated by the milling cutter are discharged through the chip removal groove 10, and then pass through the second through groove 19 in turn, and are thrown out by the centrifugal force generated by the rotation of the connecting plate 6. The arc grooves 20 equidistantly distributed in the second through groove 19 further accelerate the chip discharge efficiency and ensure the chip removal stability.

[0048] Preferably, a centrifugal force-driven cleaning assembly is provided in the connecting disk 6, and the cleaning assembly includes a movable rod 28, a brush plate 7, bristles 8, a second spring 30, a movable groove 29 and a slider 27. The slider 27 slides inside the movable groove 29, and the slider 27 is fixedly connected to the movable rod 28. The movable rod 28 is extended outward along the movable groove 29 under the action of centrifugal force, driving the brush plate 7 to dynamically clean the processing area, and the number of the second springs 30 is two, and the elastic coefficients of the two second springs 30 are differently configured to achieve complementary coverage of the cleaning area. A connecting rod 9 is fixedly connected to one side of the other brush plate 7, and the connecting rod 9 is fixedly connected to the circumferential outer wall of the connecting disk 6. When When the milling cutter structure is being processed, the connecting disk 6 rotates to generate centrifugal force to drive the slider 27 in the movable groove 29, and then drives the movable rod 28 and the brush plate 7 to diffuse outward. The higher the milling cutter speed, the greater the centrifugal force generated by the connecting disk 6, and the greater the extension of the movable rod 28 from the movable groove 29. The cleaning area of ​​the processing table by the bristles 8 at the bottom of the brush plate 7 is expanded accordingly. The second spring 30 with different elastic coefficients in the two movable grooves 29 makes the two movable rods 28 have different extension amounts under the same centrifugal force. Combined with the connecting rod 9 and the brush plate 7 fixed on the outer wall of the connecting disk 6, the three groups of brush plates 7 and bristles 8 form complementary cleaning areas to avoid cleaning dead corners and keep the processing environment clean.

[0049] Preferably, the bottom outer wall of the connecting disk 6 is provided with second through grooves 19 distributed at equal distances, the top of the connecting disk 6 is provided with first through grooves 14 distributed in a circular shape at equal distances, the first through groove 14 is connected to the second through groove 19, the circumferential inner wall of the second through groove 19 is provided with an arc groove 20 for expanding the chip removal area, and the reinforcing rod 16 is provided with a third through groove 31 at one end close to the connecting disk 6, and the third through groove 31 is located directly above the first through groove 14. The third through groove 31 at one end of the reinforcing rod 16 close to the connecting disk 6 is located directly above the first through groove 14. This through groove design enables the chips generated by the milling cutter to be discharged more smoothly through the chip removal groove 10, the third through groove 31, the first through groove 14 and the second through groove 19, and cooperates with the centrifugal force of the rotation of the connecting disk 6 to accelerate the chip removal speed, ensure the chip removal stability, and provide support for high-precision machining.

[0050] In summary, with the aid of the above technical solution of the present invention: since the end of the milling cutter arbor 1 is provided with a first cutter head 11 and a second cutter head 12, respectively, since the length of the first long edge surface 1101 and the second long edge surface 1103 in the first cutter head 11 is longer than the first short edge surface 1201 and the second short edge surface 1203 in the second cutter head 12, the long and short edge surfaces in the first cutter head 11 and the second cutter head 12 cooperate with each other, so that the long edge surface undertakes the main cutting task to quickly remove a large amount of material, and the short edge surface assists in cutting and performs surface finishing, and the two cooperate to The function not only improves the cutting efficiency and processing accuracy, but also reasonably distributes the cutting force, improves the chip removal effect, prevents chip entanglement and cutting force fluctuations, and at the same time, due to the staggered distribution of the two first cutter heads 11 and the four second cutter heads 12, the cutting force of the milling cutter can be reasonably distributed between the long and short blade surfaces, avoiding excessive local force, effectively preventing the resonance of the entire milling cutter, reducing the degree of tool wear, making the long and short blade surfaces wear relatively evenly, thereby extending the service life of the entire milling cutter and enhancing the adaptability of the tool to different processing materials and working conditions;

[0051] At the same time, wave grooves are provided on the outer wall of the chip grooves 10 at the four second cutter heads 12, which can change the chip flow path, increase the surface area to reduce friction, split and crush the chips, thereby optimizing the chip removal path and enhancing the chip removal capacity, allowing the chips to be quickly discharged to take away the heat and reduce the cutting temperature;

[0052] When machining operations such as milling holes are required using this milling cutter structure, the connecting plate 6 will be pressed tightly against the surface of the workpiece to be machined under the action of the first spring 3. When the entire milling cutter rotates for hole milling, the connecting plate 6 will also rotate together with the tool shank 1. During this process, through the mutual cooperation of the balls 17 and the rolling grooves 18 provided at the bottom of the connecting plate 6, it is possible to effectively prevent the bottom of the connecting plate 6 from directly contacting the surface of the workpiece, prevent the connecting plate 6 from scratching the surface of the workpiece during rotation, and at the same time, through the first spring 3, the bottom of the connecting plate 6 is pressed tightly against the surface of the workpiece, which can also make the entire hole milling operation more stable, improve the machining accuracy of the milling cutter. The debris generated during the operation of this milling cutter can be discharged through the chip removal groove 10. The debris discharged from the chip removal groove 10 will be squeezed into the second through groove 19, and then squeezed into the second through groove 19 through the second through groove 19, and finally thrown out by the centrifugal force generated when the connecting plate 6 rotates, ensuring the stability of the chip removal of the entire milling cutter. Moreover, through the arc-shaped grooves 20 arranged at equal distances in the second through groove 19, the discharge efficiency of the debris can be effectively increased;

[0053] During the machining process of the milling cutter structure, the honeycomb-shaped reinforcing tube 5 and the arc-shaped reinforcing rod 16 can be closely attached to the circumferential outer wall of the tool shank 1, thus playing a good reinforcement role and further improving the strength of the entire milling cutter. And due to the unique honeycomb structure of the reinforcing tube 5, it can not only make the entire milling cutter lighter, but also the hollow honeycomb structure is conducive to the discharge of debris. At the same time, the arc-shaped reinforcing rod 16 can make the area where it reinforces the tool shank 1 more uniform, avoiding the generation of a large number of reinforcement dead corners. At the same time, the reinforcing tube 5 is fixedly connected to the bottom of the movable plate 4. Therefore, during the operation of the milling cutter, through the sliding of the sliding rod 24 inside the sliding groove 15, the positions of the reinforcing tube 5 and the reinforcing rod 16 can be effectively adjusted, ensuring that when the milling cutter structure processes workpieces of different thicknesses, both the reinforcing rod 16 and the reinforcing rod 16 can play a good reinforcement effect on the tool shank 1, realizing the adaptive adjustment of the reinforcement area of the milling cutter;

[0054] When the milling cutter structure is machining, a certain centrifugal force can be generated as the connecting plate 6 rotates. At this time, the slider 27 located inside the movable groove 29 will be driven by the centrifugal force to drive the movable rod 28 and the brush plate 7 to spread outwards. At the same time, when the rotation speed of the milling cutter increases, the centrifugal force generated by the connecting plate 6 will also increase, so that the elongation of the movable rod 28 from the movable groove 29 will gradually increase, thereby being able to expand the cleaning area of the bristles 8 at the bottom of the brush plate 7 on the machining table. At the same time, the second springs 30 arranged in the two movable grooves 29 have different elastic coefficients, so that the elongation of the two movable rods 28 will be different under the same centrifugal force. Finally, in cooperation with the connecting rod 9 and the brush plate 7 fixed on the outer wall of the connecting plate 6 and not moving, the three groups of brush plates 7 and bristles 8 can form a complementary cleaning area, effectively avoiding the occurrence of cleaning dead corners;

[0055] At the same time, during the machining of the milling cutter structure, in order to prevent the milling cutter structure from overheating, cutting fluid is added to the injection hole 25, and the cutting fluid entering the injection hole 25 flows from the guide groove 22 into the liquid separation groove 26, and is finally discharged through the liquid outlet 21, so that the first cutter head 11 and the second cutter head 12 can be effectively cooled, and the service life of the first cutter head 11 and the second cutter head 12 is extended. In addition, since the guide groove 22 is spirally distributed inside the tool rod 1, the problem of reducing the overall structural strength of the tool rod 1 due to the opening of the traditional hollow guide groove 22 is effectively avoided. Compared with the linear or simple hollow guide groove 2 2. The spiral guide groove 22 can more evenly disperse the internal stress of the tool bar 1 while realizing the functions of coolant delivery and heat extraction. Its spiral direction makes the force on the tool bar 1 material more balanced in all directions, avoiding the occurrence of stress concentration. In addition, the spiral structure is adapted to the rotational movement direction of the tool bar 1. During the rotary cutting process of the tool, centrifugal force can be used to assist the flow of coolant, improve the guide efficiency, and enhance the torsional strength of the tool bar 1 to a certain extent, ensuring that the tool bar 1 can maintain good structural stability and strength when subjected to complex loads such as cutting force, taking into account both functionality and structural strength.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-edge high-strength milling cutter structure, comprising a cutter bar (1) and a plurality of cutting units arranged at the end of the cutter bar (1), characterized in that: The cutting unit comprises a first cutting head (11) and a second cutting head (12); the first cutting head (11) comprises a first long cutting edge (1101), a second long cutting edge (1103), and a first cutting groove (1102); the second cutting head (12) comprises a first short cutting edge (1201), a second short cutting edge (1203), and a second cutting groove (1202); the first long cutting edge (1101), the second long cutting edge (1103) and the first short cutting edge (1201), the second short cutting edge (1203) are staggeredly distributed along the circumference of the cutting rod (1); and the cutting force distribution of the first cutting head (11) and the second cutting head (12) is configured as a cooperative cutting mode to reduce cutting force fluctuations and disperse local loads; A cooling component for cooling the first cutter head (11) and the second cutter head (12) is arranged inside the cutter rod (1); The outer wall of the knife rod (1) is provided with a reinforcement component and a displacement component for adjusting the position of the reinforcement component.

2. A multi-edge high-strength milling cutter structure according to claim 1, characterized in that: The reinforcing assembly comprises a reinforcing tube (5) sleeved on the circumferential outer wall of the knife rod (1); the reinforcing tube (5) is of a honeycomb structure; a reinforcing rod (16) is fixedly connected to the circumferential inner wall of the reinforcing tube (5); the cross section of the reinforcing rod (16) is arc-shaped; one side of the reinforcing rod (16) is in close contact with the circumferential outer wall of the knife rod (1).

3. A multi-edge high-strength milling cutter structure according to claim 2, characterized in that: The displacement assembly comprises a fixed plate (2) fixedly connected to the circumferential outer wall of the knife rod (1); a first spring (3) is fixedly connected to the bottom outer wall of the fixed plate (2); a movable plate (4) is fixedly connected to the bottom end of the first spring (3); the movable plate (4) is fixedly connected to the reinforcing tube (5); and the circumferential inner wall of the movable plate (4) is in contact with the circumferential outer wall of the knife rod (1).

4. A multi-edge high-strength milling cutter structure according to claim 3, characterized in that: The circumferential outer wall of the knife rod (1) is provided with a sliding groove (15), the interior of the sliding groove (15) is slidably connected with a sliding rod (24), and one end of the sliding rod (24) is fixedly connected to the circumferential inner wall of the movable disk (4).

5. A multi-edge high-strength milling cutter structure according to claim 4, characterized in that: The cooling component comprises a liquid injection hole (25) provided at the top of the knife rod (1); a liquid separation groove (26) and a guide groove (22) are respectively provided inside the knife rod (1); the cross section of the guide groove (22) is spiral-shaped; the two ends of the guide groove (22) are respectively connected to the liquid injection hole (25) and the liquid separation groove (26); one side of the first knife groove (1102) and the second knife groove (1202) are both provided with a liquid outlet hole (21); the liquid outlet hole (21) is connected to the liquid separation groove (26).

6. A multi-edge high-strength milling cutter structure according to claim 5, characterized in that: The circumferential outer wall of the tool rod (1) is provided with a chip groove (10) for guiding materials to the first tool head (11) and the second tool head (12); the outer wall of the chip groove (10) located on the second tool head (12) is provided with a corrugated groove (13); the corrugated groove (13) is used to change the chip flow path, divide the chips and reduce the friction between the chips and the chip groove (10).

7. A multi-edge high-strength milling cutter structure according to claim 6, characterized in that: The bottom end of the reinforcing tube (5) is fixedly connected to a connecting plate (6), the bottom outer wall of the connecting plate (6) is provided with rolling grooves (18) distributed in a circular shape at equal distances, and balls (17) are arranged inside the rolling grooves (18).

8. A multi-edge high-strength milling cutter structure according to claim 7, characterized in that: A cleaning component driven by centrifugal force is provided in the connecting disk (6), and the cleaning component comprises a movable rod (28), a brush plate (7), bristles (8), a second spring (30), a movable groove (29) and a slider (27). The slider (27) slides inside the movable groove (29). The slider (27) is fixedly connected to the movable rod (28). The movable rod (28) is extended outward along the movable groove (29) under the action of centrifugal force, driving the brush plate (7) to dynamically clean the processing area. The number of the second springs (30) is two, and the elastic coefficients of the two second springs (30) are configured differently to achieve complementary coverage of the cleaning area. A connecting rod (9) is fixedly connected to one side of the other brush plate (7), and the connecting rod (9) is fixedly connected to the circumferential outer wall of the connecting disk (6).

9. A multi-edge high-strength milling cutter structure according to claim 8, characterized in that: The bottom outer wall of the connecting plate (6) is provided with second through grooves (19) distributed at equal distances, the top of the connecting plate (6) is provided with first through grooves (14) distributed in a circular shape at equal distances, the first through grooves (14) are connected to the second through grooves (19), and the circumferential inner wall of the second through groove (19) is provided with an arc groove (20) for expanding a chip removal area.

10. A multi-edge high-strength milling cutter structure according to claim 9, characterized in that: A third through slot (31) is formed at one end of the reinforcing rod (16) close to the connecting plate (6), and the third through slot (31) is located directly above the first through slot (14).

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